5 Series E39 525i (M54) TOUR
17 00 039
Bleeding cooling system and checking for
water leaks
Caution!
These bleeding instructions only apply to vehicles without a
latent heat accumulator.
On cars with latent heat accumulators, follow venting
procedure set out in MG64.
On cars with independent heating, follow additional venting
procedure.
Warning!
Danger of scalding!
Only perform this work after engine has cooled down.
Check cooling system for leaks.
Top up coolant.
To ensure the cooling system is properly vented, it is absolutely
essential to follow the steps below:
1.
Undo cap but do not remove from expansion tank. This
prevent excessive discharge of coolant from the expansion
tank.
2.
Turn on ignition.
3.
Set heating controller to max. temperature.
4.
Set blower to low level. This opens the heating valves and
sets the auxiliary water pump in operation.
5.
Run engine and briefly press accelerator pedal three to four
times (approx. 4500 to 5000 rpm) to flush engine cooling
circuit.
6.
In doing so, do not run engine for longer than approx. 30
seconds; otherwise coolant will heat up and expand.
RA Bleeding cooling system and checking for water leaks
BMW AG - TIS
19.02.2013 18:52
Issue status (12/2007) Valid only until next DVD is issued
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